Process of making brick.



UNITED STATES OREON s. DAVIS, or ANAHEIM, CALIFORNIA, AssIGNoR or, 'rwo 'rnmns To wiL iaM H.

SPAKE AND OCTAVE A. LAGMAN, oF ANAHEIM, CALIFORNIA.

PROCESS. OF HAKING BRICK.

Specification of Letters Patent.

Patented June 15,1909.

Application filed rebmaryza, 1907. Serial No.as,a9a;- j

To all whom it may concern:

'Be it known that I, OREON S. DAVIS, a citizen of the United States, residing at Anaheim, in the county of Orange and State of California, have invented a new and useful Process'of Making Brick, of which the following is a specification. 1

This invention relates to the .manufacture I of building blocks, bricks, tiles andsimilar articles, and has forits; rinci al object toi provide an improved met od 0 manufacturing an article of this type-which will not be affected by moisture or'exposure t0 the sun.

In carr ing out the invention, the articles, such as locks, bricks, tiles, pi es, or the like,.-'are first molded and presse from clay the asphaltum has penetrated to the extent of about one-half inch that a smooth, waterproof surface will be formed. .The articles are then removed from the. asphaltum bath and placed in an oven heated to a temperature corres onding to that of the liquid asphaltum, t at is to say, from 212 to 700 degrees Fahrenheit, to prevent cracking, which would ensue if they were transferred to a comparatively cool oven, the articles being allowed to remain in the oven and the ashaltum maintained in more or less liquid ibrm so that it may penetrate farther mto the block of material and become more fully absorbed thereby. After ex )osure for a short period to the heat of t e oven, it is found that the surface of the blocks or other articles presents a dead or dull black appearance, and the temperature of the oven -is gradually reduced to a point where the articles can be removed with safety.

' The bricks or other articles so made are cheap, durable and moisture proof, and are found of considerable value in places where they must be exposed. to the heat of the sun.

I claim The herein described mcthod'of manufacturing bricks, blocks, and the like, which consists in first formin and pressing the article from clay or eart drying it to expel moisture, but without baking, immersing it in a bath of asphaltum having a temperature of from 212 to 700 F. to permit penetration of the article b the asphaltum to a depth of about one-haf an inch, then removing it from the bath and subjecting it to a gradually decreasing dry temperature having an initial degree approximating that of the melted asphaltum to cause the latter further to strike mto the article, and finally removing the article.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

OREON S. DAVIS.

Witnesses:

E. W. McCoLLUM, L. S. EVANS. 

